Std-10 Most Imp Ch 11 Gseb L-5

In class 12 there are 8 students. In class 11 there are 6 students .In class 10 there are 5 students . Total ways of selecting 10 students , such that there are at least 2 students from each class and at most 5 students from 11 students of Class 10 and 11 combined is 100k. Then find value of k

Which of the following is incorrect about a sample of 11.2L CH_4 gas at STP :

The average of 11 numbers is 10.9. If the average of the first six numbers is 10.5 and that of the last six numbers is 11.4, then the middle number is: (a) 11 (b) 11.3 (c) 11.4 (d) 11.5

Class 10 Board 2024 | Complete Grammar in 1 Video ?| All Concepts Explanation | All Imp. Questions

1 L of a gaseous mixture is effused in 5 min 11s , while 1 L of oxygen takes 10 min . The gaseous mixture contains methane and hydrogen. Calculate ( a ) The density of gaseous mixture. ( b ) The percentage by volume of each gas in mixture.

If the radius of inner most electronic orbit of a hydrogen atom is 5.3xx10^(-11) m, then the radii of n=2 orbit is

What is the pH of 10^(-3) M ammonia cyanide solution, if K_(HCN)=7.2 xx 10^(-11) and K_(NH_(3))=1.8 xx 10^(-5)mol L^(-1) ?